mirror of
https://github.com/ItzCrazyKns/Perplexica.git
synced 2025-04-29 15:52:35 +00:00
636 lines
18 KiB
TypeScript
636 lines
18 KiB
TypeScript
'use client';
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import { useEffect, useRef, useState } from 'react';
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import { Document } from '@langchain/core/documents';
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import Navbar from './Navbar';
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import Chat from './Chat';
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import EmptyChat from './EmptyChat';
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import crypto from 'crypto';
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import { toast } from 'sonner';
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import { useSearchParams } from 'next/navigation';
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import { getSuggestions } from '@/lib/actions';
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import { Settings } from 'lucide-react';
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import Link from 'next/link';
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import NextError from 'next/error';
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export type Message = {
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messageId: string;
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chatId: string;
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createdAt: Date;
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content: string;
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role: 'user' | 'assistant';
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suggestions?: string[];
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sources?: Document[];
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};
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export interface File {
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fileName: string;
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fileExtension: string;
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fileId: string;
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}
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interface ChatModelProvider {
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name: string;
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provider: string;
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}
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interface EmbeddingModelProvider {
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name: string;
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provider: string;
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}
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const checkConfig = async (
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setChatModelProvider: (provider: ChatModelProvider) => void,
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setEmbeddingModelProvider: (provider: EmbeddingModelProvider) => void,
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setIsConfigReady: (ready: boolean) => void,
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setHasError: (hasError: boolean) => void,
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) => {
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try {
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let chatModel = localStorage.getItem('chatModel');
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let chatModelProvider = localStorage.getItem('chatModelProvider');
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let embeddingModel = localStorage.getItem('embeddingModel');
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let embeddingModelProvider = localStorage.getItem('embeddingModelProvider');
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const autoImageSearch = localStorage.getItem('autoImageSearch');
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const autoVideoSearch = localStorage.getItem('autoVideoSearch');
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if (!autoImageSearch) {
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localStorage.setItem('autoImageSearch', 'true');
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}
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if (!autoVideoSearch) {
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localStorage.setItem('autoVideoSearch', 'false');
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}
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const providers = await fetch(`/api/models`, {
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headers: {
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'Content-Type': 'application/json',
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},
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}).then(async (res) => {
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if (!res.ok)
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throw new Error(
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`Failed to fetch models: ${res.status} ${res.statusText}`,
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);
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return res.json();
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});
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if (
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!chatModel ||
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!chatModelProvider ||
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!embeddingModel ||
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!embeddingModelProvider
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) {
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if (!chatModel || !chatModelProvider) {
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const chatModelProviders = providers.chatModelProviders;
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chatModelProvider =
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chatModelProvider || Object.keys(chatModelProviders)[0];
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chatModel = Object.keys(chatModelProviders[chatModelProvider])[0];
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if (!chatModelProviders || Object.keys(chatModelProviders).length === 0)
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return toast.error('No chat models available');
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}
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if (!embeddingModel || !embeddingModelProvider) {
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const embeddingModelProviders = providers.embeddingModelProviders;
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if (
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!embeddingModelProviders ||
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Object.keys(embeddingModelProviders).length === 0
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)
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return toast.error('No embedding models available');
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embeddingModelProvider = Object.keys(embeddingModelProviders)[0];
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embeddingModel = Object.keys(
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embeddingModelProviders[embeddingModelProvider],
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)[0];
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}
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localStorage.setItem('chatModel', chatModel!);
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localStorage.setItem('chatModelProvider', chatModelProvider);
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localStorage.setItem('embeddingModel', embeddingModel!);
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localStorage.setItem('embeddingModelProvider', embeddingModelProvider);
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} else {
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const chatModelProviders = providers.chatModelProviders;
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const embeddingModelProviders = providers.embeddingModelProviders;
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if (
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Object.keys(chatModelProviders).length > 0 &&
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!chatModelProviders[chatModelProvider]
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) {
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const chatModelProvidersKeys = Object.keys(chatModelProviders);
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chatModelProvider =
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chatModelProvidersKeys.find(
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(key) => Object.keys(chatModelProviders[key]).length > 0,
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) || chatModelProvidersKeys[0];
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localStorage.setItem('chatModelProvider', chatModelProvider);
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}
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if (
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chatModelProvider &&
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!chatModelProviders[chatModelProvider][chatModel]
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) {
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chatModel = Object.keys(
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chatModelProviders[
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Object.keys(chatModelProviders[chatModelProvider]).length > 0
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? chatModelProvider
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: Object.keys(chatModelProviders)[0]
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],
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)[0];
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localStorage.setItem('chatModel', chatModel);
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}
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if (
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Object.keys(embeddingModelProviders).length > 0 &&
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!embeddingModelProviders[embeddingModelProvider]
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) {
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embeddingModelProvider = Object.keys(embeddingModelProviders)[0];
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localStorage.setItem('embeddingModelProvider', embeddingModelProvider);
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}
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if (
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embeddingModelProvider &&
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!embeddingModelProviders[embeddingModelProvider][embeddingModel]
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) {
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embeddingModel = Object.keys(
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embeddingModelProviders[embeddingModelProvider],
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)[0];
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localStorage.setItem('embeddingModel', embeddingModel);
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}
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}
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setChatModelProvider({
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name: chatModel!,
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provider: chatModelProvider,
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});
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setEmbeddingModelProvider({
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name: embeddingModel!,
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provider: embeddingModelProvider,
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});
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setIsConfigReady(true);
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} catch (err) {
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console.error('An error occurred while checking the configuration:', err);
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setIsConfigReady(false);
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setHasError(true);
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}
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};
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const loadMessages = async (
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chatId: string,
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setMessages: (messages: Message[]) => void,
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setIsMessagesLoaded: (loaded: boolean) => void,
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setChatHistory: (history: [string, string][]) => void,
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setFocusMode: (mode: string) => void,
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setNotFound: (notFound: boolean) => void,
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setFiles: (files: File[]) => void,
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setFileIds: (fileIds: string[]) => void,
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) => {
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const res = await fetch(`/api/chats/${chatId}`, {
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method: 'GET',
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headers: {
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'Content-Type': 'application/json',
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},
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});
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if (res.status === 404) {
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setNotFound(true);
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setIsMessagesLoaded(true);
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return;
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}
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const data = await res.json();
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const messages = data.messages.map((msg: any) => {
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return {
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...msg,
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...JSON.parse(msg.metadata),
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};
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}) as Message[];
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setMessages(messages);
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const history = messages.map((msg) => {
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return [msg.role, msg.content];
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}) as [string, string][];
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console.debug(new Date(), 'app:messages_loaded');
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document.title = messages[0].content;
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const files = data.chat.files.map((file: any) => {
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return {
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fileName: file.name,
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fileExtension: file.name.split('.').pop(),
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fileId: file.fileId,
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};
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});
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setFiles(files);
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setFileIds(files.map((file: File) => file.fileId));
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setChatHistory(history);
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setFocusMode(data.chat.focusMode);
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setIsMessagesLoaded(true);
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};
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const ChatWindow = ({ id }: { id?: string }) => {
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const searchParams = useSearchParams();
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const initialMessage = searchParams.get('q');
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const [chatId, setChatId] = useState<string | undefined>(id);
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const [newChatCreated, setNewChatCreated] = useState(false);
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const [chatModelProvider, setChatModelProvider] = useState<ChatModelProvider>(
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{
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name: '',
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provider: '',
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},
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);
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const [embeddingModelProvider, setEmbeddingModelProvider] =
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useState<EmbeddingModelProvider>({
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name: '',
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provider: '',
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});
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const [isConfigReady, setIsConfigReady] = useState(false);
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const [hasError, setHasError] = useState(false);
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const [isReady, setIsReady] = useState(false);
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useEffect(() => {
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checkConfig(
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setChatModelProvider,
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setEmbeddingModelProvider,
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setIsConfigReady,
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setHasError,
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);
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, []);
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const [loading, setLoading] = useState(false);
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const [messageAppeared, setMessageAppeared] = useState(false);
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const [chatHistory, setChatHistory] = useState<[string, string][]>([]);
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const [messages, setMessages] = useState<Message[]>([]);
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const [files, setFiles] = useState<File[]>([]);
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const [fileIds, setFileIds] = useState<string[]>([]);
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const [focusMode, setFocusMode] = useState('webSearch');
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const [optimizationMode, setOptimizationMode] = useState('speed');
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const [isMessagesLoaded, setIsMessagesLoaded] = useState(false);
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const [notFound, setNotFound] = useState(false);
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useEffect(() => {
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if (
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chatId &&
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!newChatCreated &&
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!isMessagesLoaded &&
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messages.length === 0
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) {
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loadMessages(
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chatId,
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setMessages,
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setIsMessagesLoaded,
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setChatHistory,
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setFocusMode,
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setNotFound,
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setFiles,
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setFileIds,
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);
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} else if (!chatId) {
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setNewChatCreated(true);
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setIsMessagesLoaded(true);
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setChatId(crypto.randomBytes(20).toString('hex'));
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, []);
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const messagesRef = useRef<Message[]>([]);
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useEffect(() => {
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messagesRef.current = messages;
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}, [messages]);
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useEffect(() => {
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if (isMessagesLoaded && isConfigReady) {
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setIsReady(true);
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console.debug(new Date(), 'app:ready');
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} else {
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setIsReady(false);
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}
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}, [isMessagesLoaded, isConfigReady]);
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const sendMessage = async (message: string, messageId?: string) => {
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if (loading) return;
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if (!isConfigReady) {
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toast.error('Cannot send message before the configuration is ready');
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return;
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}
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setLoading(true);
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setMessageAppeared(false);
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let sources: Document[] | undefined = undefined;
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let recievedMessage = '';
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let added = false;
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messageId = messageId ?? crypto.randomBytes(7).toString('hex');
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console.log(
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JSON.stringify({
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content: message,
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message: {
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messageId: messageId,
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chatId: chatId!,
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content: message,
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},
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chatId: chatId!,
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files: fileIds,
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focusMode: focusMode,
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optimizationMode: optimizationMode,
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history: chatHistory,
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chatModel: {
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name: chatModelProvider.name,
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provider: chatModelProvider.provider,
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},
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embeddingModel: {
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name: embeddingModelProvider.name,
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provider: embeddingModelProvider.provider,
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},
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}),
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);
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setMessages((prevMessages) => [
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...prevMessages,
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{
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content: message,
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messageId: messageId,
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chatId: chatId!,
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role: 'user',
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createdAt: new Date(),
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},
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]);
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const messageHandler = async (data: any) => {
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if (data.type === 'error') {
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toast.error(data.data);
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setLoading(false);
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return;
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}
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if (data.type === 'sources') {
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sources = data.data;
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if (!added) {
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setMessages((prevMessages) => [
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...prevMessages,
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{
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content: '',
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messageId: data.messageId,
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chatId: chatId!,
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role: 'assistant',
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sources: sources,
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createdAt: new Date(),
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},
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]);
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added = true;
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}
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setMessageAppeared(true);
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}
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if (data.type === 'message') {
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if (!added) {
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setMessages((prevMessages) => [
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...prevMessages,
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{
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content: data.data,
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messageId: data.messageId,
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chatId: chatId!,
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role: 'assistant',
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sources: sources,
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createdAt: new Date(),
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},
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]);
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added = true;
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}
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setMessages((prev) =>
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prev.map((message) => {
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if (message.messageId === data.messageId) {
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return { ...message, content: message.content + data.data };
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}
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return message;
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}),
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);
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recievedMessage += data.data;
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setMessageAppeared(true);
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}
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if (data.type === 'messageEnd') {
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setChatHistory((prevHistory) => [
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...prevHistory,
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['human', message],
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['assistant', recievedMessage],
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]);
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setLoading(false);
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const lastMsg = messagesRef.current[messagesRef.current.length - 1];
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if (
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lastMsg.role === 'assistant' &&
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lastMsg.sources &&
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lastMsg.sources.length > 0 &&
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!lastMsg.suggestions
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) {
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const suggestions = await getSuggestions(messagesRef.current);
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setMessages((prev) =>
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prev.map((msg) => {
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if (msg.messageId === lastMsg.messageId) {
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return { ...msg, suggestions: suggestions };
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}
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return msg;
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}),
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);
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}
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const autoImageSearch = localStorage.getItem('autoImageSearch');
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const autoVideoSearch = localStorage.getItem('autoVideoSearch');
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if (autoImageSearch === 'true') {
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document
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.getElementById(`search-images-${lastMsg.messageId}`)
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?.click();
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}
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if (autoVideoSearch === 'true') {
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document
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.getElementById(`search-videos-${lastMsg.messageId}`)
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?.click();
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}
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}
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};
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const res = await fetch('/api/chat', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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content: message,
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message: {
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messageId: messageId,
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chatId: chatId!,
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content: message,
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},
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chatId: chatId!,
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files: fileIds,
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focusMode: focusMode,
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optimizationMode: optimizationMode,
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history: chatHistory,
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chatModel: {
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name: chatModelProvider.name,
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provider: chatModelProvider.provider,
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},
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embeddingModel: {
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name: embeddingModelProvider.name,
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provider: embeddingModelProvider.provider,
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},
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}),
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});
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if (!res.body) throw new Error('No response body');
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const reader = res.body?.getReader();
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const decoder = new TextDecoder('utf-8');
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let partialChunk = '';
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while (true) {
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const { value, done } = await reader.read();
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if (done) break;
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partialChunk += decoder.decode(value, { stream: true });
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try {
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const messages = partialChunk.split('\n');
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for (const msg of messages) {
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if (!msg.trim()) continue;
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const json = JSON.parse(msg);
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messageHandler(json);
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}
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partialChunk = '';
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} catch (error) {
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console.warn('Incomplete JSON, waiting for next chunk...');
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}
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}
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};
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const rewrite = (messageId: string) => {
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const index = messages.findIndex((msg) => msg.messageId === messageId);
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if (index === -1) return;
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const message = messages[index - 1];
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setMessages((prev) => {
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return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
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});
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setChatHistory((prev) => {
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return [...prev.slice(0, messages.length > 2 ? index - 1 : 0)];
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});
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sendMessage(message.content, message.messageId);
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};
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useEffect(() => {
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if (isReady && initialMessage && isConfigReady) {
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sendMessage(initialMessage);
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [isConfigReady, isReady, initialMessage]);
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if (hasError) {
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return (
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<div className="relative">
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<div className="absolute w-full flex flex-row items-center justify-end mr-5 mt-5">
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<Link href="/settings">
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<Settings className="cursor-pointer lg:hidden" />
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</Link>
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</div>
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<div className="flex flex-col items-center justify-center min-h-screen">
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<p className="dark:text-white/70 text-black/70 text-sm">
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Failed to connect to the server. Please try again later.
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</p>
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</div>
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</div>
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);
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}
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return isReady ? (
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notFound ? (
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<NextError statusCode={404} />
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) : (
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<div>
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{messages.length > 0 ? (
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<>
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<Navbar chatId={chatId!} messages={messages} />
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<Chat
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loading={loading}
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messages={messages}
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sendMessage={sendMessage}
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messageAppeared={messageAppeared}
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rewrite={rewrite}
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fileIds={fileIds}
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setFileIds={setFileIds}
|
|
files={files}
|
|
setFiles={setFiles}
|
|
/>
|
|
</>
|
|
) : (
|
|
<EmptyChat
|
|
sendMessage={sendMessage}
|
|
focusMode={focusMode}
|
|
setFocusMode={setFocusMode}
|
|
optimizationMode={optimizationMode}
|
|
setOptimizationMode={setOptimizationMode}
|
|
fileIds={fileIds}
|
|
setFileIds={setFileIds}
|
|
files={files}
|
|
setFiles={setFiles}
|
|
/>
|
|
)}
|
|
</div>
|
|
)
|
|
) : (
|
|
<div className="flex flex-row items-center justify-center min-h-screen">
|
|
<svg
|
|
aria-hidden="true"
|
|
className="w-8 h-8 text-light-200 fill-light-secondary dark:text-[#202020] animate-spin dark:fill-[#ffffff3b]"
|
|
viewBox="0 0 100 101"
|
|
fill="none"
|
|
xmlns="http://www.w3.org/2000/svg"
|
|
>
|
|
<path
|
|
d="M100 50.5908C100.003 78.2051 78.1951 100.003 50.5908 100C22.9765 99.9972 0.997224 78.018 1 50.4037C1.00281 22.7993 22.8108 0.997224 50.4251 1C78.0395 1.00281 100.018 22.8108 100 50.4251ZM9.08164 50.594C9.06312 73.3997 27.7909 92.1272 50.5966 92.1457C73.4023 92.1642 92.1298 73.4365 92.1483 50.6308C92.1669 27.8251 73.4392 9.0973 50.6335 9.07878C27.8278 9.06026 9.10003 27.787 9.08164 50.594Z"
|
|
fill="currentColor"
|
|
/>
|
|
<path
|
|
d="M93.9676 39.0409C96.393 38.4037 97.8624 35.9116 96.9801 33.5533C95.1945 28.8227 92.871 24.3692 90.0681 20.348C85.6237 14.1775 79.4473 9.36872 72.0454 6.45794C64.6435 3.54717 56.3134 2.65431 48.3133 3.89319C45.869 4.27179 44.3768 6.77534 45.014 9.20079C45.6512 11.6262 48.1343 13.0956 50.5786 12.717C56.5073 11.8281 62.5542 12.5399 68.0406 14.7911C73.527 17.0422 78.2187 20.7487 81.5841 25.4923C83.7976 28.5886 85.4467 32.059 86.4416 35.7474C87.1273 38.1189 89.5423 39.6781 91.9676 39.0409Z"
|
|
fill="currentFill"
|
|
/>
|
|
</svg>
|
|
</div>
|
|
);
|
|
};
|
|
|
|
export default ChatWindow;
|